a) Explain how the voltmeter reading changes when the resistance of the variable resistor is increased. b) Resistor R2 has a resistance of 570 N. Calculate the value of the variable resistor R, when the reading on the voltmeter is 4.0 V.

a) Explain how the voltmeter reading changes when the resistance of the variable resistor is increased. b) Resistor R2 has a resistance of 570 N. Calculate the value of the variable resistor R, when the reading on the voltmeter is 4.0 V.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

6.
The circuit diagram below shows a potential divider. The battery has negligible internal resistance
and the voltmeter has infinite resistance.
12.0 V-
a) Explain how the voltmeter reading changes when the resistance of the variable resistor is
increased.
b) Resistor R2 has a resistance of 570 N. Calculate the value of the variable resistor R1 when
the reading on the voltmeter is 4.0 V.

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